{"product_id":"ferguson-enterprises-b1789847-flow-check-piston-kit","title":"Ferguson Enterprises b1789847 Flow Check Piston Kit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe FERGUSON ENTERPRISES b1789847 is a genuine OEM replacement flow check piston kit designed for use in split-system heat pump and air conditioning refrigerant circuits. The flow check piston controls refrigerant direction and pressure drop across the metering device, allowing the system to operate efficiently in both heating and cooling modes. Licensed HVAC technicians install this component as part of refrigerant-side service or system repair. It is a direct OEM replacement part, ensuring correct fitment and function without field modification.\u003c\/p\u003e\n\u003cp\u003eThis flow check piston kit is intended for residential split-system heat pump applications where the existing piston or flow check assembly has failed or requires replacement during a refrigerant-circuit service call. The kit format provides the necessary components for a complete replacement. Install this part only when the system has been properly recovered and the refrigerant circuit is depressurized. Do not substitute non-OEM pistons, as orifice sizing is system-specific and directly affects system capacity and efficiency.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine OEM replacement part ensuring correct orifice sizing for the target system\u003c\/li\u003e\n  \u003cli\u003eFlow check function allows bidirectional refrigerant metering in heat pump systems\u003c\/li\u003e\n  \u003cli\u003eKit format includes components needed for a complete piston assembly replacement\u003c\/li\u003e\n  \u003cli\u003eDirect drop-in replacement requiring no field modification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement flow check piston kit for residential heat pump and split-system air conditioning equipment.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by an EPA Section 608 certified HVAC technician. Recover all refrigerant from the system before opening the refrigerant circuit to replace the piston assembly. Ensure the system is fully depressurized and follow applicable mechanical codes before disassembling the metering device. After reassembly, pressure-test the circuit for leaks before recharging with the manufacturer-specified refrigerant type and charge.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Type\u003c\/strong\u003e: Flow Check Piston Kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Status\u003c\/strong\u003e: Genuine OEM Replacement Part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: FERGUSON ENTERPRISES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: b1789847\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FERGUSON ENTERPRISES","offers":[{"title":"Default Title","offer_id":51161866633522,"sku":"B1789847","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/306253986.jpg?v=1778884341","url":"https:\/\/voomisupply.com\/products\/ferguson-enterprises-b1789847-flow-check-piston-kit","provider":"Voomi Supply","version":"1.0","type":"link"}